EXAMPLE 1: A 30-kg disc of radius 2 m rotates at a constant 120 RPM. ... EXAMPLE 2: Calculate the rotational velocity fo
ROTATIONAL VELOCITY & ACCELERATION ● The rotational equivalents of linear velocity and acceleration are Rotational Velocity and Rotational Acceleration: v,AVG = ____________ [ _______ ]
_______ = ____________ [ ________ ]
a = ____________ [ _______ ]
_______ = ____________ [ ________ ]
● There are 3 additional variables that describe how quickly something rotates (similar to w). They are all related: w = _________ = _________ = _________ ( ___________ )
1 RPM = __________ 1 Hz = __________
- Often we will convert from any of these three back to _____
● Note that rotational equations work for both: (1) Points Masses ( ________ ) moving in a circular path; or (2) Rigid Body/Shape ( ________ ) rotating around themselves. EXAMPLE 1: A 30-kg disc of radius 2 m rotates at a constant 120 RPM. Calculate its (a) period, (b) angular speed.
EXAMPLE 2: Calculate the rotational velocity for the Earth as it (a) rotates around itself, (b) rotates around the Sun.
